[PSUBS-MAILIST] CO2 Sorb

[via Personal_Submersibles]

Thanks Cliff. I was also running the numbers on Pisces VI. We will have the following for 1 pilot and 3 observers for a 8 hour mission time and 5 day emergency use
*400 cuft O2 outside hull emergency use (five 80cuft tanks)
*160-81 cuft O2 inside hull for up to 8hr mission use (two 80cuft bottles allowing for full discharge)
*144 lbs sodasorb emergency use (three 48lb jugs)
*12 lbs sodasorb for up to 8hr mission use (two scrubbers loaded)

Thank you,
Scott Waters

>  -------Original Message-------
>  From: Cliff Redus via Personal_Submersibles <personal_submersibles at psubs.org>
>  To: Personal Submersibles General Discussion <personal_submersibles at psubs.org>
>  Subject: Re: [PSUBS-MAILIST] CO2 Sorb
>  Sent: Aug 16 '16 14:14
>  
>  Scott, ABS  uses  a value of 0.115 lbm CO2  generated per hour per
>  occupant.  Sotasorb HP specification says it can absorb 41% CO2 by
>  weight.  This comes out to 3.56 Persons-hours per pound of SodaSorb HP
>  which is close the number Alec posted.  ABS rules call for full life
>  support for 72 hours plus normal duty time.  If you assume normal duty
>  time is 8 hours, then the life support system would need to last for
>  80 hours.  For one person this would give 22.5 lbs of SodaSorbHP and
>  for two, 45 lbs for this duration.
>  
>  Actual consumption rate is dependent on a lot of parameters, such as
>  temperature, humidly, mass of occupants and design of scrubber to
>  mention just a few.
>  
>  Cliff
>  
>  On Tue, Aug 16, 2016 at 11:02 AM, via Personal_Submersibles
>  <personal_submersibles at psubs.org> wrote:
>  
>  > Hey guys, Just doing a safety check. What is the rough amount of CO2
>  > sorb that is needed per occupant per day (normally measured in
>  > weight)? I have a 48lb jug in Trustworthy which I know is enough for
>  > 2 people for 3 days. I am just planning on putting it in premeasured
>  > sealed bags for better storage and was wondering about how much does
>  > it actually take.
>  >
>  > Thank you,
>  > Scott Waters
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